Your gut relies on just the right balance of different bacteria to digest your food and to prevent infection and inflammation. Gut health also affects your mental health, weight, blood sugar, and liver. Prebiotic foods (whole grains, bananas, greens, onions, garlic, soybeans, and artichokes) act as food for healthy gut bacteria. Probiotic foods like yogurt are full of good bacteria already.
Many factors, including the foods you eat, can impact the type of bacteria found in your digestive tract.